In Custer County there are 7 residential internet providers covering 96.84% of the county. The average home can get speeds up to 894 Mbps. Note that we may have a financial relationship with some of the providers below. This does not influence rankings, and helps us provide high-quality detailed information for free.
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7 Internet Service Providers in Custer County
Data updated 11/14/2025, based on FCC data from 12/31/2024. This is the most current data available as of .
To avoid wasting your time, providers with less than 1% coverage in Custer County are not shown.
Custer County Satellite TV & Internet Providers
DISH Satellite TV
DIRECTV Satellite TV
Not sure whether to choose Dish or DIRECTV? For most people most of the time we recommend DISH. But click here to learn more.
Viasat Satellite Internet
Availability maps for all providers in Custer County
Using the dropdown below, please select a provider. Green indicates nearly all homes have service, red indicates few homes have service, and blank indicates no service.
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Internet service is available in 96.84% of Custer County. Using our interactive availability map, you can compare service areas for different providers, we include fiber, cable, DSL, or fixed wireless internet service for all providers who offer it. You will notice that some providers might be listed multiple times for each service. If you find no providers cover the location you're looking at, you can opt for satellite service. The most widely available provider is Custer. Now you can call companies in Custer County with more confidence that they might be available.
How fast are internet speeds in Custer County?
The map below shows maximum internet speeds by area in Custer County.
Internet Speed Key
The average Custer County home can get up to 894 Mbps on their internet plan. For most people, the fastest download speed in the county is 1,000 Mbps, which 86.01% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 1.66% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Custer County.
Internet speeds tend to be faster in the northeast parts of Custer County, and slower in the northwest areas of the county.
What type of internet should I choose in Custer County?
The fastest internet for you may vary based on where in Custer County you live. If speed is your main concern, fiber will be the fastest internet in the county.
- Fiber is the fastest internet type for 86.81% of Custer County homes.
- Cable is fastest for less than 1% of the county.
- DSL is fastest for 6.43%.
- Fixed wireless is fastest for 3.60%.
- Satellite internet may be the only option for 3.16% of Custer County homes.
Internet Market Health in Custer County
Internet Competition Key
The map shows how competitive the Custer County internet service market is. Areas in green have more alternatives, areas in yellow have a few choices, and areas in red may have only one provider. More competition usually means faster speeds and better prices for you, the customer.
Below are quick facts on internet competition and market health in Custer County based on what connections the average home has availabile:
- Average number of internet service providers to a home: 2.3 (very unhealthy)
- Average types of service (fiber, cable, DSL, etc): 2.1 (very unhealthy)
- Average providers with broadband (25 Mbps+) speeds: 2.2 (very unhealthy)
Overall, competition is very unhealthy.
Custer County internet customers have the ability to buy internet service from 1 to 4 different providers, depending on where they live. For different types of service, Custer County homes have between 1 and 3 options. The type(s) of service available are fiber, fixed wireless, dsl, and cable, though these may vary depending on the region within the county.
When it comes to broadband download speeds faster than 25 Mbps, the situation is worse. Custer County internet customers who want faster speeds have between 0 and 4 choices of companies offering speeds up to or over 25 Mbps.
More internet companies with faster speeds means fewer monopolies and better prices for customers. In promoting a free market for internet, Custer County badly needs improvement.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in Custer County, along with details on where in Custer County and at what speeds.
Custer Telephone Cooperative Fiber in Custer County, ID
Custer fiber coverage
About 53.10%, or 2,270 people, have Custer fiber internet available to them in the county. The company covers the north, central, west, northeast, and east Custer County area. Custer is a small internet service provider internet service providers in the US, with internet service available in a majority of Custer County.
Custer Telephone Cooperative fiber download speeds
Custer is above average when comparing download speeds to all other internet providers in Custer County. Versus other fiber providers in the area, Custer fiber is the slowest. There are 2 different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from Custer goes up to 1,000 Mbps, the slowest package only goes up to 100 Mbps, and the county-wide average maximum speed for Custer County customers is up to 987 Mbps.
Show all download speeds
- 98.5% up to 1,000.0 Mbps
- 1.5% up to 100.0 Mbps
Custer Telephone Cooperative fiber upload speeds
In Custer County download speeds tend to be equal to than upload speeds for Custer fiber. Compared to other ISPs, Custer is above average where upload speeds are concerned, and the slowest compared to other Custer County fiber providers. Custer offers 2 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Custer County is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 100 Mbps. On average, Custer customers can get speeds up to 987 Mbps.
Show all upload speeds
- 98.5% up to 1,000.0 Mbps
- 1.5% up to 100.0 Mbps
ATC Communications (Idaho) Fiber in Custer County, ID
ATC Communications fiber coverage
About 27.49%, or 1,175 people, have ATC Communications fiber internet available to them in the county. The company covers the southeast and south Custer County area. ATC Communications is a small internet service provider internet service providers in the US, with internet service available in a small portion of Custer County.
ATC Communications (Idaho) fiber download speeds
ATC Communications is one of the fastest when comparing download speeds to all other internet providers in Custer County. Versus other fiber providers in the area, ATC Communications fiber is one of the fastest. There are no different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from ATC Communications goes up to 1,000 Mbps, and all Custer County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
ATC Communications (Idaho) fiber upload speeds
In Custer County download speeds tend to be equal to than upload speeds for ATC Communications fiber. Compared to other ISPs, ATC Communications is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Custer County fiber providers. ATC Communications offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Custer County is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Custer Telephone Cooperative DSL in Custer County, ID
Custer DSL coverage
About 20.05%, or 857 people, have Custer DSL internet available to them in the county. The company covers the north, central, west, southwest, northwest, and south Custer County area. Custer is a small internet service provider internet service providers in the US, with internet service available in a small portion of Custer County.
Custer Telephone Cooperative DSL download speeds
Custer is below average when comparing download speeds to all other internet providers in Custer County. Versus other DSL providers in the area, Custer DSL is the fastest. There are 2 different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from Custer goes up to 25 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Custer County customers is up to 22 Mbps.
Show all download speeds
- 83.2% up to 25.0 Mbps
- 16.8% up to 10.0 Mbps
Custer Telephone Cooperative DSL upload speeds
In Custer County download speeds tend to be faster than than upload speeds for Custer DSL. Compared to other ISPs, Custer is below average where upload speeds are concerned, and the fastest compared to other Custer County DSL providers. Custer offers 2 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Custer County is up to 3.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Custer customers can get speeds up to 2.7 Mbps.
Show all upload speeds
- 83.2% up to 3.0 Mbps
- 16.8% up to 1.0 Mbps
ATC Communications (Idaho) DSL in Custer County, ID
ATC Communications DSL coverage
About 12.16%, or 520 people, have ATC Communications DSL internet available to them in the county. The company covers the southeast Custer County area. ATC Communications is a small internet service provider internet service providers in the US, with internet service available in a very small piece of Custer County.
ATC Communications (Idaho) DSL download speeds
ATC Communications is the slowest when comparing download speeds to all other internet providers in Custer County. Versus other DSL providers in the area, ATC Communications DSL is the slowest. There are 2 different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from ATC Communications goes up to 25 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Custer County customers is up to 20 Mbps.
Show all download speeds
- 66.5% up to 25.0 Mbps
- 33.5% up to 10.0 Mbps
ATC Communications (Idaho) DSL upload speeds
In Custer County download speeds tend to be faster than than upload speeds for ATC Communications DSL. Compared to other ISPs, ATC Communications is the slowest where upload speeds are concerned, and the slowest compared to other Custer County DSL providers. ATC Communications offers 2 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Custer County is up to 3.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, ATC Communications customers can get speeds up to 2.3 Mbps.
Show all upload speeds
- 66.5% up to 3.0 Mbps
- 33.5% up to 1.0 Mbps
Midvale Telephone Company Fiber in Custer County, ID
Midvale Telephone Company fiber coverage
About 6.22%, or 266 people, have Midvale Telephone Company fiber internet available to them in the county. The company covers the west and southwest Custer County area. Midvale Telephone Company is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Custer County.
Midvale Telephone Company fiber download speeds
Midvale Telephone Company is one of the fastest when comparing download speeds to all other internet providers in Custer County. Versus other fiber providers in the area, Midvale Telephone Company fiber is one of the fastest. There are no different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from Midvale Telephone Company goes up to 1,000 Mbps, and all Custer County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Midvale Telephone Company fiber upload speeds
In Custer County download speeds tend to be equal to than upload speeds for Midvale Telephone Company fiber. Compared to other ISPs, Midvale Telephone Company is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Custer County fiber providers. Midvale Telephone Company offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Custer County is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Midvale Telephone Company DSL in Custer County, ID
Midvale Telephone Company DSL coverage
About 5.03%, or 215 people, have Midvale Telephone Company DSL internet available to them in the county. The company covers the west, southwest, and northwest Custer County area. Midvale Telephone Company is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Custer County.
Midvale Telephone Company DSL download speeds
Midvale Telephone Company is below average when comparing download speeds to all other internet providers in Custer County. Versus other DSL providers in the area, Midvale Telephone Company DSL is average. There are 2 different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from Midvale Telephone Company goes up to 25 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Custer County customers is up to 21 Mbps.
Show all download speeds
- 75.8% up to 25.0 Mbps
- 24.2% up to 10.0 Mbps
Midvale Telephone Company DSL upload speeds
In Custer County download speeds tend to be faster than than upload speeds for Midvale Telephone Company DSL. Compared to other ISPs, Midvale Telephone Company is below average where upload speeds are concerned, and average compared to other Custer County DSL providers. Midvale Telephone Company offers 2 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Custer County is up to 3.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Midvale Telephone Company customers can get speeds up to 2.5 Mbps.
Show all upload speeds
- 75.8% up to 3.0 Mbps
- 24.2% up to 1.0 Mbps
T-Mobile Home Internet Fixed Wireless in Custer County, ID
T-Mobile Home Internet fixed wireless coverage
About 75.46%, or 3,226 people, have T-Mobile Home Internet fixed wireless internet available to them in the county. The company covers the north, southeast, west, central, and southwest Custer County area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in much of Custer County.
T-Mobile Home Internet fixed wireless download speeds
T-Mobile Home Internet is below average when comparing download speeds to all other internet providers in Custer County. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is the fastest. There are 2 different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from T-Mobile Home Internet goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the county-wide average maximum speed for Custer County customers is up to 96 Mbps.
Show all download speeds
- 95.2% up to 100.0 Mbps
- 4.8% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In Custer County download speeds tend to be faster than than upload speeds for T-Mobile Home Internet fixed wireless. Compared to other ISPs, T-Mobile Home Internet is below average where upload speeds are concerned, and below average compared to other Custer County fixed wireless providers. T-Mobile Home Internet offers 2 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Custer County is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, T-Mobile Home Internet customers can get speeds up to 19 Mbps.
Show all upload speeds
- 95.2% up to 20.0 Mbps
- 4.8% up to 3.0 Mbps
Rise Broadband Fixed Wireless in Custer County, ID
Rise Broadband fixed wireless coverage
About 20.75%, or 887 people, have Rise Broadband fixed wireless internet available to them in the county. The company covers the southeast Custer County area. Rise Broadband is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Custer County.
Rise Broadband fixed wireless download speeds
Rise Broadband is below average when comparing download speeds to all other internet providers in Custer County. Versus other fixed wireless providers in the area, Rise Broadband fixed wireless is the slowest. There are 2 different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from Rise Broadband goes up to 50 Mbps, the slowest package only goes up to 25 Mbps, and the county-wide average maximum speed for Custer County customers is up to 45 Mbps.
Show all download speeds
- 81.4% up to 50.0 Mbps
- 18.6% up to 25.0 Mbps
Rise Broadband fixed wireless upload speeds
In Custer County download speeds tend to be faster than than upload speeds for Rise Broadband fixed wireless. Compared to other ISPs, Rise Broadband is below average where upload speeds are concerned, and the slowest compared to other Custer County fixed wireless providers. Rise Broadband offers 2 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Custer County is up to 10 Mbps. Some customers have slower plan choices, which only go up to 5.0 Mbps. On average, Rise Broadband customers can get speeds up to 9.1 Mbps.
Show all upload speeds
- 81.4% up to 10.0 Mbps
- 18.6% up to 5.0 Mbps
ATC Communications (Idaho) Fixed Wireless in Custer County, ID
ATC Communications fixed wireless coverage
About 2.39%, or 102 people, have ATC Communications fixed wireless internet available to them in the county. The company covers the southeast Custer County area. ATC Communications is a small internet service provider internet service providers in the US, with internet service available in a very small piece of Custer County.
ATC Communications (Idaho) fixed wireless download speeds
ATC Communications is below average when comparing download speeds to all other internet providers in Custer County. Versus other fixed wireless providers in the area, ATC Communications fixed wireless is average. There are no different maximum speeds throughout Custer County. The fastest plan anyone in Custer County can order from ATC Communications goes up to 75 Mbps, and all Custer County customers can get this speed.
Show all download speeds
- 100.0% up to 75.0 Mbps
ATC Communications (Idaho) fixed wireless upload speeds
In Custer County download speeds tend to be equal to than upload speeds for ATC Communications fixed wireless. Compared to other ISPs, ATC Communications is below average where upload speeds are concerned, and the fastest compared to other Custer County fixed wireless providers. ATC Communications offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Custer County is up to 75 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 75.0 Mbps
Custer County Internet by Area
This information is most helpful to those looking for homes or considering moving to Custer County or any of the areas nearby.
How does internet in Custer County compare to the rest of Idaho?
Internet speeds in Custer County are slower versus the average speeds in Idaho: 2,514 Mbps in Idaho versus 894 Mbps in the county. The state has similar internet availability compared to the county. Average internet coverage in Idaho is 98.92% versus 96.84% in Custer County.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around Custer County are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does internet service look like in other counties?
Below are counties nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Counties
- Clark County, ID: more internet coverage, slower speeds
- Washington County, ID: more internet coverage, slower speeds
- Crook County, OR: more internet coverage, slower speeds
- Johnson County, WY: less internet coverage, faster speeds
- Campbell County, WY: more internet coverage, faster speeds
- Meade County, SD: less internet coverage, faster speeds
- Haakon County, SD: more internet coverage, faster speeds
- Stanley County, SD: more internet coverage, faster speeds
- Hughes County, SD: more internet coverage, faster speeds
- Beadle County, SD: more internet coverage, faster speeds
Counties with Similar Populations
- Winn Parish, LA: less internet coverage, slower speeds
- Yoakum County, TX: more internet coverage, faster speeds
- Appanoose County, IA: more internet coverage, faster speeds
- Archer County, TX: more internet coverage, faster speeds
- Archuleta County, CO: more internet coverage, slower speeds
- Yalobusha County, MS: more internet coverage, faster speeds
- Wrangell City and Borough, AK: less internet coverage, faster speeds
- Woodruff County, AR: more internet coverage, faster speeds
- Wirt County, WV: less internet coverage, slower speeds
- Ziebach County, SD: more internet coverage, slower speeds